The UMS Mount (Universal Mount System) allows cinematographers to easily and quickly swap mounting systems in the field without back focal adjustment. Once the UMS mount has been installed on the lens and the lens’ back focus has been adjusted (if necessary), cinematographers in the field can easily switch between PL, EF, E, F, FZ, MFT and LPL mounts with no play, no shift in back focus and no re-shimming.
Native mount is a modified PL Mount.